Nicolas rubinstein



(No Model.)

N.RUBINSTBIN, 00L-ULEB( SUB.V CLARKE.

,PEDAL AND GRAN-K POR V'BLOGIPEDBS. l No.- 5.2?595v Pate-med July 24,1894.

nu. Porou'rnm WASHINGTON D c AUNITED STATES 4PATENT OFFICE.

NICOLAS,RUBINSTEIN,CHARLES CLULEY, AND ERNEST CLARKE, OF COVENTRY,ENGLAND. v

PEDAL AND CRANK FOR VELOCIPEDES.

SPEQIFICATION forming part of Letters Patent No. 528,596, dated July 24,1894. Applicationnieanovemberzs,1893. sern1No.492,297 (Nomvdeh) besecured in the crank web in such a man.

ner that the inner end of the said pin shall be flush or nearly so withthe crank-Web thereby saving the space occupied by the nut usuallyemployed for this purpose and so enabling the Width over all of thepedals and cranks to be diminished without decreasing the width of thecrank shaft bracket or bearings.l

In the accompanying drawings z-Figure l shows elevation of a ballbearing bicycle pedal attached to a crank constructed according to thisinvention. Fig. 2 is a section of the same.

The same letters denote the same parts in both figures.

a a are the side plates of the ordinary pedal lfitted with ball races bb. l

c c are the hard steel balls d d the pedal bolts holding the plates a atogether f f the rubber treads.

g is the crank g the eye into which the bolt h is inserted. The eye ghas a tapered hole formed therein by\ slotting or boring which hole isalso provided with a recess or keyway e'.

n is the crank pin having a flange o forming a ball race at the end nextto the crank the said flange being preferably slightly recessed toinsure a firm bearing of the outer portion of the said flange on thecrank. The outer end of the tube'n has a screw thread cut thereon whichengages with a similar thread on the adjustable ball race p which servesto set up the ball bearing in the usual way.

h is a bolt having a screw thread at the outer end thereof and a taperedhead laccurately fitting the hole in the eye g at the inner end the headl being provided with a pin or key In to prevent it from rotating in thecrank eye.

`When the pedal has been placed on the tube n and the bearing adjusted awasher q' having a D shaped hole therein is placed on the central bolt hon which is cut a fiat to receive the washer and the nut r screwed upVtight drawing the head of the pin h into the hole in the eye g andforcing the flange o to bear firmly against the crank. Care must betaken that when the bearing is properly adj usted the tube n does notproject beyond the cone 1o but that the washer q bears evenly againstthe head of the ball race p. The washer q and nut r also prevent theball race 1o from rotating or slacking backJ To apply our invention toexisting cranks having square holes in the eyes thereof we y may'eitherform the pins n with tapering square heads and file out the holes in thecrank eyes to lit the same or we may form the 4 said pin with a pan orother suitably shaped head and a square tapered neck iitting the hole inthe crank eye.

What we do claim as our invention, and desire to secure by LettersPatent, is- A 4 In cranks and pedals for veloeipedos and the like thecombination of a central bolt having a tapered head thereon fitting atapered hole in the crank eye with a -tubular crank pin n having aflange shaped to form a ball race at one end thereof and a screw threadto receive an adjustable ball racep at th'e other Vend of the said pinand a ball bearing pedal the whole adapted to be secured to the crank bymeans of a nut r. and washer q substantially as specified.

NICOLAS RUBINSTEIN. CHARLES CLULEY. ERNEST CLARKE.

Witnesses i WILLIAM BARTON,

Clerk to Mess. Dawes, Seymour at Wilke, v

Solrs., l0 Hay Lane, Coventry.

MoNrAeUE WILKs, Public Notary, Coventry, England.

